modernize

Documentation

Overview

Package modernize providers the modernizer analyzer.

Analyzer modernize

modernize: simplify code by using modern constructs

This analyzer reports opportunities for simplifying and clarifying existing code by using more modern features of Go, such as:

• replacing an if/else conditional assignment by a call to the built-in min or max functions added in go1.21;
• replacing sort.Slice(x, func(i, j int) bool) { return s[i] < s[j] } by a call to slices.Sort(s), added in go1.21;
• replacing interface{} by the 'any' type added in go1.18;
• replacing append([]T(nil), s...) by slices.Clone(s) or slices.Concat(s), added in go1.21;
• replacing a loop around an m[k]=v map update by a call to one of the Collect, Copy, Clone, or Insert functions from the maps package, added in go1.21;
• replacing []byte(fmt.Sprintf...) by fmt.Appendf(nil, ...), added in go1.19;
• replacing uses of context.WithCancel in tests with t.Context, added in go1.24;
• replacing omitempty by omitzero on structs, added in go1.24;
• replacing append(s[:i], s[i+1]...) by slices.Delete(s, i, i+1), added in go1.21
• replacing a 3-clause for i := 0; i < n; i++ {} loop by for i := range n {}, added in go1.22;
• replacing Split in "for range strings.Split(...)" by go1.24's more efficient SplitSeq;

Index

• Variables

Variables

var Analyzer = &analysis.Analyzer{
	Name:     "modernize",
	Doc:      analysisinternal.MustExtractDoc(doc, "modernize"),
	Requires: []*analysis.Analyzer{inspect.Analyzer},
	Run:      run,
	URL:      "https://pkg.go.dev/golang.org/x/tools/gopls/internal/analysis/modernize",
}